Paleomagnetic synthesis for Southeast Asia: Constraints on plate motions

Jarrard, Richard D.; Sasajima, Sadao

doi:10.1029/gm023p0293

Cited by 34 publications

(6 citation statements)

References 81 publications

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“…He was not able to show that the Eocene paleolatitude differs from that of the present, and concluded that the Celebes Sea formed in low latitudes. This finding is consistent with paleomagnetic studies in Borneo (Haile et al, 1977) and Malaysia (Jarrard and Sasajima, 1980). Lee and McCabe (1986) reinterpreted the magnetic anomalies in the Celebes Sea and proposed a hypothesis linking the Sulu, Celebes, and Banda seas as becoming successively older from north to south (42-47 Ma for Sulu, 65-72 Ma for Celebes, and 130 Ma for Banda).…”

Section: °Ssupporting

confidence: 82%

Geological Setting of the Celebes and Sulu Seas

Rangin¹,

Silver²

1990

Proceedings of the Ocean Drilling Program

109

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The Sulu and Celebes Seas lie to the southeast of the South China Sea, within a complex geodynamic environment marked by active arc-arc or arc-continent collision zones, subduction zones, and long strike-slip fault zones. Prior to Leg 124, neither the ages nor the mode of formation of these basins were clear. The basins are located near the zone of complex junction between the Pacific, Indian Ocean, and Philippine Sea plates (Fig. 1). They may have been related to the history of one of these plates prior to collision or be the remnants of a subducted ocean that previously extended between these major plates (the Molucca Sea or neo-Tethys Ocean). Alternatively, they may have formed by back-arc spreading processes or, as in the case of the South China Sea, as a result of continental rifting unrelated to arc activity. Numerous models have been proposed for the opening of small ocean basins in a position marginal to a continent or a piece of continent by convergent boundaries. In the west Pacific region (Fig. 1), a widely accepted model is that of extension in the back-arc area (Chase, 1978; Molnar and Atwater, 1978; Uyeda and Kanamori, 1979). This model might be applied to the Sulu Sea (Mitchell et al., 1986; Rangin, 1989) but not obviously to the Celebes Sea. The South China Sea has been interpreted as an Atlantic type (Taylor and Hayes, 1980) or a pull-apart basin, possibly related to transcurrent shear zones controlled by intracontinental deformation processes (lapponnier et al., 1982; Lallemand and Jolivet, 1985). The Atlantic-type model could be extended to other marginal or intracontinental basins of the Eurasian margin, such as the Japan Sea or the Yellow Sea (Taylor and Rangin, 1988). Paleogene rifting and Oligocene-Miocene spreading from Borneo to Japan and the suspected presence of dominantly north-south right slip faults along the east Asian margin suggests that an extensional stress regime was present along the Eurasian margin during this period. These marginal basins could also be interpreted as trapped fragments from a larger ocean, as a consequence of subduction zone flipping or jumping along the volcanic arcs bordering these basins. If these basins have had an exotic origin relative to Asia, their stratigraphic histories will be unrelated to the Eurasian continental margin. The Celebes and Sulu seas are deep (4000-5000 m) restricted basins located between the island of Borneo to the west and the north-south elongated Philippine Archipelago to the east. They are part of a succession of subparallel oceanic basins trending roughly northeast. Separating the basins from South China to Banda are narrow, elongated ridges such as the Cagayan Ridge,

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Section: °Ssupporting

confidence: 82%

Geological Setting of the Celebes and Sulu Seas

Rangin¹,

Silver²

1990

Proceedings of the Ocean Drilling Program

109

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“…On the other hand, as seen in Table 3, small stable eastward deviations of remanence directions of Pliocene-Quaternary rocks deviations from the meridian are observed for the entire South of the USSR Far East and Japan (x= 6.7 deg, .-s= 5.0 deg). However, similar eastern declinations are also noticed for certain Danian-Eocene rocks from SikhoteAlin, Paleogene rocks from SW Japan and Cretaceous rocks from Korea (JARRARD and SASAJIMA, 1980;OTOFUJI et al, 1983;GURARY et al, 1966).…”

Section: Introductionsupporting

confidence: 53%

“…Paleomagnetic characteristics are allocated to the rocks which have similar petrographical and geological properties and whose K-Ar ages were determined more accurately (AKHMETYEV and FILIMONOVA, 1986). The comparison of the calculated paleopoles to those from Japan and South Korea (JARRARD and SASAJIMA, 1980;OTOFUJI et al, 1983) showed a good S61 Magnetic Properties of Late Cretaceous-Cenozoic Volcanic Rocks consistency (Table 3): Cretaceous paleopoles of the Sikhote-Alin region and Shikotan Island (for Maestrichtian) have similar positions to those calculated from the North-East Japan (index Nos. 14-16 in Table 3).…”

Section: Introductionmentioning

confidence: 99%

Magnetic Properties of Late Cretaceous-Cenozoic Volcanic Rocks of the Soviet Far East South

Bretstein¹

1988

J,Phys,Earth

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Magnetic properties of late Cretaceous-Cenozoic basalts are discussed in relation to their composition and conditions of crystallization during the cooling of the melt in subaerial and subaqueous environments. The possible effects of secondary oxidation (maghemitization), at least in certain cases, local tectonic deformations and paleosecular variations of geomagnetic field on the distribution of NRM directions are noted. Paleomagnetic reference data for individual volcano genic complexes of the Sikhote-Alin, Sakhalin and South Kurils regions are given, and a comparison with paleomagnetic data for the same aged rocks of Japan and Korea is made.

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“…In the specialized papers presenting paleomagnetic data, the projections of paleopoles are usually shown in stereonets; around these are drawn circles of confidence. In some papers (e.g., Jarrard and Sasajima, 1980) the location of sample site is shown with a vector indicating declinations, and a numeral next to the vector giving the relative displacement toward north in degrees of latitude, e.g., \ . Even more useful information is conveyed by 44W the symbol \, -17 in a paper by Haile et al (1977).…”

Section: Paleomagnetic Datamentioning

confidence: 99%

“…The following sources of data were used: Falvey and Pritchard (1984), Haile et al (1977), James and Falvey (1978), Jarrard and Sasajima (1980), McCabe and Uyeda (1983), McCabe et ai (1982McCabe et ai ( , 1985McCabe et ai ( , 1987, Otofuji et al (1981). This list is of course not comprehensive, but rather arbitrary, and interested readers should consult regional reviews like that by Jarrard and Sasajima (1980) for further references.…”

Section: Paleomagnetic Datamentioning

confidence: 99%

Tectonic map of the Circum-Pacific region, southwest quadrant

Palfreyman¹,

Scheibner²,

Satô³

et al. 1991

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The Circum-Pacific Map Project is a cooperative international effort designed to show the relationship of known energy and mineral resources to the major geologic features of the Pacific basin and surrounding continental areas. Available geologic, mineral, and energy-resource data are being complemented by new, project-developed data sets such as magnetic lineations, seafloor mineral deposits, and seafloor sediment. Earth scientists representing some 180 organizations from more than 40 Pacific-region countries are involved in this work. Six overlapping equal-area regional maps at a scale of 1:10,000,000 form the cartographic base for the project: the four Circum-Pacific Quadrants (Northwest, Southwest, Southeast, and Northeast), and the Antarctic and Arctic Sheets. There is also a Pacific Basin Sheet at a scale of

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Paleomagnetic synthesis for Southeast Asia: Constraints on plate motions

Cited by 34 publications

References 81 publications

Geological Setting of the Celebes and Sulu Seas

Geological Setting of the Celebes and Sulu Seas

Magnetic Properties of Late Cretaceous-Cenozoic Volcanic Rocks of the Soviet Far East South

Tectonic map of the Circum-Pacific region, southwest quadrant

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